Process of handling plaster-board.



1. SCHUMACHER.

PROCESS 0F HANDLING PLASTER BOARD APPucATloN F1LED1L1NEZ. 1919.

1,325,452. 1 Patented Deo. 16,1919,

4 SHEETS-SHEET 1.

m lll nl'nwezzrz or .hn Schumacher l 1. SCHUMACHER. PROCESS 0F HANDL'ING PLASTER BOARD.

APPLICATION FILED JUNEZ. 1919.

' Patented Dec. 16,1919

.|. SCHUMACHER.

PROCESS 0F HANDLING PLASTER BOARD.

APPucATloN FILED JUNE 2. 1919.

Patented De@.16,11919.

4 SHEEs-SHEET 3L r w .m I

.lzn Schu/maciza J. SCHUMACI'IER.

PROCESS 0F HANDLING PLASTER HMRI).

APPLICATION min lunE 2. 1919.

4 SHEETS-SHEET 4.

JOHN SCHUMACHER, OFLOS ANGELES, CALIFORNIA.

PROCESS F HANDLING PLASTIEK-EGARD.

i To all 'whom t may concern:

Be it known that I, JOHN SoirUMAoHnR, a. citizen of' the United States, residing at Los Angeles, in the countyv of Los Angeles and State of California, have invented new and useful Improvements in .Processes of- 4on trays or other receiving means in its 1ni Atially wet condition, allowed to harden, and sub-divided. In'my application for Inachine `for making plaster board and the like, Serial No. 278,186, apparatus for making plaster board and delivering the same from the machine 1n a vertical direction is disclosed; 1

According to the present invention, long sheets 'of plaster board are laid horizontally upon conveyers, the latter reciprocating.

`'The next step consists in sub-dividing the sheets into lengths suitable for handling in the. final stages of use of the, plaster board.

The sub-division of the plaster board is per-v formed while the board is on the conveyer .and before it is nally dried. Trimming of the sheetsmay be performed as a separate step, if desired.Y y

The present invention is especially adapted for use with plaster board formed of a plurality of pieces of paper with an interposed layer of retarded plaster therebetween, the paper being ofthe character which retards permeation by moisture. Thus, several plaster board sheets may be built up and handled in flexible condition, being stacked in such condition in horizontal position, and then set aside so that the plaster may set or harden. vAfter.such setting of the mass, it may he subdivided and trimmed on its longitudinal edges, the cut being taken through all the sheets of plaster board comprising the mass. A. perfectly smooth edge may thus be obtained `for the l plaster board requiring no further trimming sheets may new be raised on edge of the product before marketing. According to theusual practice, thesub-divided dried in spaced relation.

.It is obvious thatinanykinds and types of apparatus may be employed in making the plaster board and in handling the same' .after manuacture.` In'the accompanying the present invention. ess 1s 1n no way limited. -to the utilization and finally specification of Letters raient. tratante@ Da', as, i919, Application led .Tune 2, 1919. Serial No. 301,212.

drawing, certain apparatus is disclosedfor carrying out the process which'constitutes However, the procof this 0'1" any particular apparatus. Such apparatus is illustrated. in the acebmpanying drawings, in which:

Figure 1 is a side elevation of apparatus Vsuitable for carrying out certain steps of the process; Fig. 2 is a side elevation of apparatus for carrying out other steps of the,

process succeedingthe steps carried out by the, apparatus shown in Fig. 1; Fig. 3 is a plan View of the apparatus shown in Fig. 2, the ends being broken away ;A Fig. 4 is a fragmentary perspective view' showing the guide means used for the apparatus shown in Figl; Fig. 5 is a diagrammatic View in section through the guide .means illustrated in Fig.'4; Figs. 6 and 7 are views similar *to-.Fig 5 showing otherpositions of theI switch; Flg. 8 is an enlarged transverse sec- 'tion throughdetent forlockingthe' guideA in neutral position; Fig. 9 is a fragmentary side elevationof a modified form of guide means; Fig. 10 is a section taken on the line 10-10 of Fig. 9; Fig. 1l is a side elevation of the complete guide apparatus shown in Fig. 9 and the conveyor cars for coperating therewith; and F ig.` 12 is an enlarged section taken on the linelQ-lQ of Fig. 11. Referring particularly to Figs. 1, 2 and 3, A indicates generally a machine for making plaster board B, which is delivered vertically, and/laidl horizontally upon cars C. As the plaster board passes from the machine, it'is severed by a cutter D, the severed ends being guided by .guide E. A longitudinal cutting means is indicated by F and a transverse cutting means by Gr.

Referring particularly to Fig. 1, the plaster board machine consists of a lhopper formed by strips of paper 14 carried by endless conveycrs 15 which converge toward a discharge outlet. Plaster is fed into the hopper, the plaster board B emerging from the hopper as wetflexilble board. The kboard is ied continuously and passes through a severing mechanism D comprising a cutter Way 16 which is reciprocated. Sliding in the ico.'

cutter way transversely of the board is a cutter 17 which passes through the board.

from one sidevto the other. The cutter is operated by suitable .mechanism so that it is s AThe sa'W 27 of the transverse trimming,

same speed. Thus, the-plaster hoardV is fed.

from the machine continuously and cut Without any variation in speed.

. The train of cais C reciprocate under the '5 severing mechanism, andvis lmoved by a vchain and associated mechanism indicated generally by 18. The mechanism may be of any convenient form, and therefore, is not described in detail.V The movement ofthe carsand the severing mechanism is-so adjusted, that a severed end of the plaster, board indicated by 19, see Fig.A 1, is laid upon-l a car at one end. Thus, as the -train moves to the right as indicatedfby the arrow a: 1n

15 Fig. 1 the plaster board is spreadthereover.

-passes under the severing mechanisml a cut is made throughithe 'board and the end laid .upon the car. The guide mechanismisnow operated to cause the plaster board to flow upon the car inthe opposite direction. This continues until a'number of lengths have been laid upon the cars in stacked relation. .The' plaster board is now allowed to set, after which it-is'sub-divided and trimmed.

'21 by means of which loaded trays 22 may be handled. The cars C have trays 22 upon which the plaster board is laid. These trays withllayers 'of plaster board thereon are used for bringing the plaster 'board into desired positions in other steps of its manufacture.

' Fdesignates trimming means for the longi-4 tudinal ,trimming of the plasterboard, and

23 mounted upon a suitable shaft 24 journaled in a framework 25. Thetrimming means isvpositioned'over atrack 26 upon which the-train of cars C moves `Lto convey 5.0 the plaster lboard past the saws 23 to trim x both edges of the layers. After the layers' have'been trimmed longitudinally, the train .may betopped at the transverse trimming meansl to l sub-divideidgtween the cars of the train.

means is preferably swung from an overhead frame Work-28' by means of' a swinging4 frame 29'. It is obvious that/by sub-divid` ing'the initial lengths of plaster 'board in the' manner just described, a great wastage of plaster board is prevented. lf desired, the y sub-dividing maybe so performed that no s ,further transverse trimming is required. 05' In Figs. 4 to 8 inclusive a type of guide Referring particularly to Fics.A 2 .and 3,- i 'a traveling crane 20 is provided5 with hooks comprises a pair of depending'circular savvs` ermit the plast'erboard to, be

v'machine as possible.I It is also desirable that the plaster boa-rdf'be guided upon the cars, and the ends ofthe initial length laidupon the ears without very much of a drop. In this manner the form and 'constitution of the plaster board'will not be. disturbed. It is ,also advantageous to so guide the severed ends of the plaster boalrd uponthe cars'that.

when in'stacked relation, the ends willrvery so closely register. Thus, in trimming the" ends only a small amount of board-is wasted. Atthe time that the severed ends are laid v`upon the train, there isa chargeV in direction of movement of thetrain.- .lVithout g5- some -guide meansthe severed ends would not registerf- The guide means shown in. Figs. stand 8 Linclusive is designed to properly lay the ends of the plaster board.' Alj though, this mechanism 1s -described'in de- .90v tail, it forms no part of thepresent inven= -ton which is for amethod of handling plasterboard; A

l Referring to Figs. 1 to el, avhangerframe 30 is shown. Journaled in the-frame is a 95 switch member31. Switch member 31 is atriangular'prism having two curved faces meeting in an apex pointing upwardly. l, A trunnion 3i hasa. segmental'piuion 35 fixed thereto. Jo'urnaled von ashaft fixed to frame 10o .l

30 is asegmental pinion36 meshing with pinion, 35. Extendingefrom the pinion 36 is-,an arm 37. Secured to the arm 37 and ex* ltending' inwardly are tines-3'8- and 39. It is y obvious that byvrockingarm`37 the switch 1,0 'Y member 31 .may be rocked. It is desired to rock the switch member intheV proper direction as either-of the 'end cars of a train pass f "thereunder. For this purpose pins are se-` cured tothe end cars 1n .such positionithat 1I" they wlll engage the arm 37 as the cars pass thereunder. A pin' 40 is seclllredztotherleft.'A i

hand car adjacent its free end. As thetrain of cars moves ,to the right, pin .40 will' engage arm 37 and rockffthe "switch .member 1115 Iin the direction shown in Fig. jl'Asthe"4 1 train of carsl reverses its. directionbf ipo-.l tion, 1t 1s desired that swltch member 31 be returned toitsneutral posltlonas` indicatedv jin Fig. 5. 'The pin '40 will have .enteredv in 1'2" the space between. tine. 38 an'd arm 37, and can not disengage itself until the-arm has' reached its neutral position as shown .in Fig'.- y'

-7. The pin 41 onthe'end of the right hand'V i car may engage the arm 37 as the train of, 125

cars reaches the opposite endlofits travel.

vIn a like manner switch 31" is rocked'in th 'opposite direction and' thenback toits eu,.-

tral position. In order tolnormally r tain" the switch in neutral positions datent is' 130" said plaster board on t0 said receiver, severl ing the plaster' board When the receiver reaches the ends of its travel, and switching plaster board on Whichconsists in vertically delivering plaster board in a flexible state, reciprocating a receiver horizontally thereunder, flowing 10 said plaster board on to said receiver, severing the plaster board when the receiver reaches the ends of its travel, switching the direction of flow of said plaster board von' to said receiver, permitting setting of the severed plaster board, and transversely subdividing said severed plaster board. vIn Witness that I claim the yforegoing I have hereunto Subscribed my name thi 23rd day of May, 1919. l

JOHN scHUMA'ci'fiEiif 

